Investigate flaky test-fs-realpath-pipe #25070

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1. Trott

   added

   flaky-testIssues and PRs involving tests that fail intermittently in CI.Issues and PRs involving tests that fail intermittently in CI.

   on Dec 16, 2018
2. Trott commented on Dec 18, 2018

   

   Trott

   on Dec 18, 2018

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   Still happening, but infrequently enough that I'm comfortable not marking it flaky and seeing if whatever combination of things fixes #25007 fixes this too.

   Recent example:

   https://ci.nodejs.org/job/node-test-commit-linux-containered/9529/nodes=ubuntu1604_sharedlibs_withoutintl_x64/console

   test-digitalocean-ubuntu1604_sharedlibs_container-x64-10

   01:56:47 not ok 690 parallel/test-fs-realpath-pipe
   01:56:47   ---
   01:56:47   duration_ms: 0.410
   01:56:47   severity: fail
   01:56:47   exitcode: 1
   01:56:47   stack: |-
   01:56:47     assert.js:86
   01:56:47       throw new AssertionError(obj);
   01:56:47       ^
   01:56:47     
   01:56:47     AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
   01:56:47     
   01:56:47     null !== 2
   01:56:47     
   01:56:47         at Object.<anonymous> (/home/iojs/build/workspace/node-test-commit-linux-containered/test/parallel/test-fs-realpath-pipe.js:29:10)
   01:56:47         at Module._compile (internal/modules/cjs/loader.js:718:30)
   01:56:47         at Object.Module._extensions..js (internal/modules/cjs/loader.js:729:10)
   01:56:47         at Module.load (internal/modules/cjs/loader.js:617:32)
   01:56:47         at tryModuleLoad (internal/modules/cjs/loader.js:560:12)
   01:56:47         at Function.Module._load (internal/modules/cjs/loader.js:552:3)
   01:56:47         at Function.Module.runMain (internal/modules/cjs/loader.js:771:12)
   01:56:47         at executeUserCode (internal/bootstrap/node.js:318:15)
   01:56:47         at startExecution (internal/bootstrap/node.js:252:3)
   01:56:47         at startup (internal/bootstrap/node.js:203:3)
   01:56:47   ...
3. richardlau commented on Dec 21, 2018

   

   richardlau

   on Dec 21, 2018

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   And again: https://ci.nodejs.org/job/node-test-commit-linux/nodes=centos7-64-gcc6/24226/testReport/junit/(root)/tes/parallel_test_fs_realpath_pipe/
4. ZYSzys commented on Jan 8, 2019

   

   ZYSzys

   on Jan 8, 2019

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   +1 here: https://ci.nodejs.org/job/node-test-commit-linuxone/nodes=rhel72-s390x/9094/testReport/junit/(root)/test/parallel_test_fs_realpath_pipe/

   assert.js:86
     throw new AssertionError(obj);
     ^
   
   AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
   
   null !== 2
   
       at Object.<anonymous> (/data/iojs/build/workspace/node-test-commit-linuxone/nodes/rhel72-s390x/test/parallel/test-fs-realpath-pipe.js:29:10)
       at Module._compile (internal/modules/cjs/loader.js:718:30)
       at Object.Module._extensions..js (internal/modules/cjs/loader.js:729:10)
       at Module.load (internal/modules/cjs/loader.js:617:32)
       at tryModuleLoad (internal/modules/cjs/loader.js:560:12)
       at Function.Module._load (internal/modules/cjs/loader.js:552:3)
       at Function.Module.runMain (internal/modules/cjs/loader.js:771:12)
       at executeUserCode (internal/bootstrap/node.js:435:15)
       at startExecution (internal/bootstrap/node.js:372:3)
   
5. gireeshpunathil commented on Jan 10, 2019

   

   gireeshpunathil

   on Jan 10, 2019

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   again, recreatable in freebsd:

   AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
   
   null !== 2
   
       at Object.<anonymous> (test/parallel/test-fs-realpath-pipe.js:29:10)
       at Module._compile (internal/modules/cjs/loader.js:718:30)
       at Object.Module._extensions..js (internal/modules/cjs/loader.js:729:10)
       at Module.load (internal/modules/cjs/loader.js:617:32)
       at tryModuleLoad (internal/modules/cjs/loader.js:560:12)
       at Function.Module._load (internal/modules/cjs/loader.js:552:3)
       at Function.Module.runMain (internal/modules/cjs/loader.js:771:12)
       at executeUserCode (internal/bootstrap/node.js:318:15)
       at startExecution (internal/bootstrap/node.js:252:3)
       at startup (internal/bootstrap/node.js:203:3)
   

   (gdb) where
   #0  0x000000080323d277 in pthread_mutex_destroy () from /lib/libthr.so.3
   #1  0x000000080323c7e6 in pthread_mutex_lock () from /lib/libthr.so.3
   #2  0x000000000145b86d in v8::platform::tracing::TracingController::GetCategoryGroupEnabledInternal ()
   #3  0x0000000000e60316 in v8::internal::CancelableLambdaTask<v8::internal::ArrayBufferCollector::FreeAllocations()::$_0>::RunInternal ()
   #4  0x0000000000980fb6 in node::(anonymous namespace)::PlatformWorkerThread ()
   #5  0x0000000803235c06 in pthread_create () from /lib/libthr.so.3
   #6  0x0000000000000000 in ?? ()
   (gdb) thr 2
   [Switching to thread 2 (process 101173)]#0  0x0000000803516ff4 in realloc () from /lib/libc.so.7
   (gdb) where
   #0  0x0000000803516ff4 in realloc () from /lib/libc.so.7
   #1  0x00000008035175b1 in free () from /lib/libc.so.7
   #2  0x00000000008fdebd in std::__1::__tree<...> ::destroy ()
   #3  0x00000000008fdec9 in std::__1::__tree<...>::destroy ()
   #4  0x00000000008fdebd in std::__1::__tree<...>::destroy ()
   #5  0x00000000008fdebd in std::__1::__tree<... >::destroy ()
   #6  0x00000000008fdec9 in std::__1::__tree<... >::destroy ()
   #7  0x00000000008fc5f3 in node::native_module::NativeModuleLoader::~NativeModuleLoader ()
   #8  0x0000000803591911 in __cxa_finalize () from /lib/libc.so.7
   #9  0x000000080351f001 in exit () from /lib/libc.so.7
   #10 0x00000000008d9231 in node::Environment::Exit ()
   #11 0x00000000008f986e in node::Exit ()
   #12 0x0000000000b2a148 in v8::internal::FunctionCallbackArguments::Call ()
   #13 0x0000000000b2974d in v8::internal::(anonymous namespace)::HandleApiCallHelper<false> ()
   #14 0x0000000000b28f17 in v8::internal::Builtin_Impl_HandleApiCall ()
   #15 0x000000000171218e in Builtins_CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit ()
   ...
   (gdb) 

   and matches all symptoms from #25007 , potential fix in #25061
6. gireeshpunathil commented on Jan 30, 2019

   

   gireeshpunathil

   on Jan 30, 2019

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   the test is active for the last one week with no failures, so as expected #25061 has fixed the underlying issue. Closing.
7. gireeshpunathil

   closed this as completedon Jan 30, 2019